ashley looks into the plan to move forward without forgetting the past. >> the cold rush was still in full swing when pier 70 became a major ship building and repair port for the west coast t played a major role in the building of the country during the spanish american and world wars. it helped build the west, supplying everything from the mining operations to the transcontinental railroad. >> steal from bethlehem helped support the construction of the golden gate bridge, the last major in project was the pier52. >> big ships still come here but other industries that flourished here's have moved on leaving a lifeless water front. port is hoping to change that with a $222 million revitalization plan to bring thousands of people back to pier70. >> it will be a change. it will be a new destination of san francisco and people to come and under the history of this site. >> it calls for new shops, restaurants and small manufacturing facilities. where ships once launched, there will be a new bay front park. developer forest city will handle a third of the pier. it hopes to build a thousand